Locking device for the hub caps of demountable wheels



E. IBACH Filed March 20 LQCKING DEVICE FOR THE HUB CAPS OF DEMOUNTABLE WHEELS Patented Sept. 2, 1924.

U En STATES LOOKING DEVICE Eon THE` HUB EMIL limon, E EHILADELPHLA; LPENNsYLvANLA, AsspieNoR ,mBY' iviEsNE ASSIGNL. MENTS, To Bunn WHEEL COMPANY',- oE PHILADELPHIA, PENNSYLVANIA, A coin'y PonA'rIoN or PENNSYLVANIA. 1

,'GAPs oF DEMOUNTABEE WHEELS,-

r Appiicatioanleanarch' 2o, 1920. sver'iainn. 3er/,463.

To, all'f`wkomft may Gartner/lt: Y n,

Beit known that I, EMnlBAGmacltlZen off( Germany `(vvho have declared, my vintention'L to` become a citizen of the United, States) atl Philadelphia, Pennsylvania,

6 residing have invented certainnew and: vuseful Imrovements in LockinggDevicesfor the Hub IC-)aps of Demountable Wheels, of 'whichv I declare the following to be a full, clear, and' in construction, and so designed that it may lie-easily produced in large lquantities ata relatively low cost, Y. Another obj ect of my invention.A is to provide a Vhub caploclnng devicejvvhicny is easily actuated, but, at the. same time, foolproof1in, operation, and Whichpositiyely locksthe lhub cap against rotation relative to'themember on which itis screwed.v n

.Another objectof my invention is to provde a hub cap locking device so designed as to .permit of the liubcapbeing substantially flush With the outer end of the hub shell, L Y

Further objects, and 'objects relatingto economies of `operation. and production and' details of construction, Will deiinitely appear from the 'detailed' descriptiongto follow.. I accomplish the objects of my invention by the devices and means described'in the following specication. My invention is clearly defined and pointed out in the appended claims. A structure, Which may kbe 40 a preferred embodiment of my invention, is illustrated in the accompanying drawing, forming a part ofv this specification, in which:

Figure I is av vertical, sectional vvie-W throughka wheel hub and hub cap provided.

with a locking device embodying my invention. Y Y i Figure II is. a-view similar to 'the jleft hand part ofqFigure I, but showing the 5 Wrench applied andthe latcli;;Wthdrawn fromA engagement. v y

Figure III isa ysectional vievvtaken 1ine1.3-3 of Figure I.

on the In the' @ravine,` Simi-1an reference numeriseveral views.

y having a vtapered seat 11-bywhich they inner hub is connected to th'e axle shaft (not) shoWn,) and a polygonal s eat ,'12, -thevfac'esfof which are Iprovided with guide slotsfl;l VThe:-

bearing' retainer 14 is j housed Within the .I a Setinaliview ,tekeninginner end fof the inner hub,4 and. the brake drum@ 1.6'is connected to the flange 157i by the bolts 17, The outer end v18 of. theinnei; hub is cylindrical, and internally threaded at. 19, and@ plurality, @if teethareformd inthe outer edge of the.v cylindrical. portion- 1 8 of' the inner hub. The' facesY pftsaid` teeth` lie infpl'anesradial to the axis, of the hub'.

a .seating portion 22. of. polygoralL ,shape which seats on the portion 12 of` thel inner hub andjcarries thev guide.. keys 23 fitting into the, slots 13. The-spokeshavetheir inner ends anchored: iny thisl xhubhell; in any suitablermanner, and the outer' end. of the hub` shell isbeveled.- ,at-25 to` aid in; centering', the shell, a ,Y v i lThehub Cap 2G. heee Cylindrical-bedr portiony 27.v Which-is externally threaded at,`

28 and, screwedI onthe threaded part., 19` of` the inner hub-u YThe hubicap 26 has a melig? nal flange havingfa beveled innerdsurface-ZQ. Aengaging the'beveledf end'4 25 ci.'k the. outer hub shell. A socket 30, of polygonal cross section, is formed. .inv the face of the hub cap 26. 'A pair `of shoulders- ,231 project inwardly from., the; bottom., ofjthe socket WithinA the hub cap, anda latch32 is mount'-` ed on the pivot pin 3 3, which is carriedby the shoulders 31. The socketQ is coaxial The outer hub. shell is provided with the hub and hub cap, and the pin- 3f;

is in une with Said axis. :rasend-:encas latch 32 extends through-a sloti'; fdrrned' in the side wall of the bodyportion 2719i the hub cap, in a position, to engage, the

teeth 20. f On ythe opposite sident-.this pivet 33, the latch .32l is reversely. curved and pro;

jects througha Aslot 38- formedia theesde wall of the socket 30, so that the inclined cam surface 37 at the end of the actuating arm 36,*v of the latch, projects within the socket 30. One end of spring 39 is seated inthe recess 40 in the inner face of the hub cap, andthe otherend of said spring presses against the latch 32 forcing the portion 34 thereof into locking engagement with the teeth 20. The latch is actuated by a wrench comprising the body portion 41, having a plug 42 of cross section to fit within the socket 30 and the handles 43 by which the wrench may be manipulated. I -From the description of the parts given above, the operation of this locking device should be very `readily understood. In Fig-- j ure I, I have shown the hub cap locked toy the inner hub, and it appears that the spring 39' presses the latchv 32 on its pivot so that the portion 34 is held by the spring pressure inlocking engagement with the teeth 20. In this position, the vcam portionv 37l of the actuating arm36 projects within the socket 30. f- When it is desired to remove the hub cap, the-plug 42 of the wrench 4l is inserted inthe socket 30. The insertion of this plug, acting on the cam portion 37 of the latch,

forces it back and rocks the latchon its pivot against the pressure of the spring`39,

so'as to withdrawy the locking portion'34 from engagement withl the teeth 20. This position of the parts is -illustrated in Figure II. The locking deviceis designed to coact with teethy on the inner hub, so that the hub cap is lockedy to the inner'hub on which it is screwed, and the outer hub is held as in a vise between the hub cap and the inner hub.

The latch swings in a plane radial to the axis of; the` hub, but 'extends transversely thereof. t Therefore, this llatch lends itself particularly to a `Hush type hub cap, in which the-face of the hub cap is substantially flush with the end of the hub shell. The parts of this locking-device are few in number, and all of them can easily be made at a low cost, and the parts of the hub cap can be very conj veniently and quickly assembled together to form the-complete device shown.

I "am aware that the particular embodiment of my invention, which I have shown and described here, is susceptible of considerable variation withoutdeparting from the spirit thereof, andtherefore, I desire to claim the same'broadly, as well as specically, as indicated by the appended claims.

Having thus'described my invention, what I claim as new and desire to secure by Letters Patent, is: j Y

l. A device of theclass described comprising the combination with an inner hub and angouter hub removably and non-rotatably mounted thereon, of a hub cap screwed on said inner hub having a socket of non-circular cross section in' its face, and a latch pivoted to the base of said socket centrally of the hub cap and lying within the same, said latch havingv a locking arm'extending to one side of said pivot through the side wall of' said hub cap, andan actuating arm *extend-` ing on the other side of 'said pivot'and` curved so that the free end thereof projects through the side wall of said socket.l

2. VAdevice of the classkdescribed comprising the combination with an inner hub and an outer hub .removably and non-rotatably mounted thereon, ofa hub cap screwed on said inner hub and having a socket of 'non-` circular cross section in yits face, and a peripheral, beveled A flange Yadapted to engage the end of the outer hub, and a latch pivoted to the base of said vsocket and lying within said hub cap transverselyvof the axis thereof, having al locking arm extending through theside Wall of said hub cap and an actuating arm extending through the side wall of said socket. y

3. l A device of the class/described comprising the combination of anv inner hub, an outer hub removably and non-rotatively mounted thereon, a hub cap screwed onone of said parts and engaging the other to i* hold said outer hub from removal, said 'hub cap havinga wrench-receiving socket formed in the face thereof, and a latch pivoted within said hub cap and Ahaving' a, lookin arm engaging Vlocking `means on one of sai huhA members and 'an' actuating arm project-ing through a wall ofsaid socket and normally positioned within said socket.

4. A device of the class described comprising the combinationv of an inner hub, an outer4 `hub removably and non-rotatively mountedthereon, a hub cap screwed on one of said parts, and engaging the other to hold said vouter hub from removal, said hub cap having a wrench-receiving socket of polygonalJcross-section formed inthe face thereof, aflatch pivotedjwithin the hub kca substantially in line with the axis thereof,I and swinging in al plane radial to-said axis, said latch having an actuating arm projecting through a side wall ofsaid socket.

5. AV device of the class described comprising the combination of an inner hub, fan outerV hub removably and non-rotatively mounted thereon, a hub capY screwed on one of said parts and engagingv the otherto: hold said outer hubV from removal', said hub cap having a wrench-receiving polygonalisocket formed 'in the face thereof with a slot fin the side wall', and a latch pivoted centrallyv with-` in said hub kcapl and-'having an actuating arm extending through the slot in the side wall of said socket andY adapted to be engaged by the wrench when the latter is fined thereon, a hub cap screwed on one of said parts and engaging the other to hold said outer hub from removal, said hub cap having a polygonal socket formed in the face thereof with a slot in its side wall, and a latch pivoted centrally within the hub cap, and having a locking arm extending through a slot formed in the side wall of the hub cap into cooperative engagement with locking means on the inner hub, and an actuating arm extending through the slot in the wall of said socket and having a cam portion projecting within said socket.

7. A device of the class described comprising the combination of an inner hub, an outer hub removably and non-rotatively mounted thereon, a hub capi screwed on one hold said outer hub from removal, said lhub cap having a polygonal socket formed in the face thereof with a slot in the side wall thereof, a pivot supported by the bottom of said socket centrally Within said hub cap, and a latch mounted on said pivot and extending transversely of the hub cap, having a locking arm extending through a slot in of Vsaid parts and engaging the other to the side Wall of the hub cap, and an actuating arm projecting through the slotI in the' centrally within the hub cap, a latch ex-l tending transversely of the hub cap and mounted on said pivot, said latch having a 'locking -arm projecting through a slot in the side wall of the hub cap into coi-operative engagement. with locking teeth on the. inner hub and an actuating arm projecting through Vthe slot in the side wall of the.

socket, and a spring-seated in the inner face of the hub cap and engaging the locking arm to hold it in engagement. In testimony whereof I ture.

EMIL iBjAoH.

aflix my signa- 

